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Summary: Inherited Constants | Fields | Methods | Inherited Methods

# Network

`public class Network`
`extends Object` `implements Parcelable`

java.lang.Object
↳ | android.net.Network

Identifies a `Network`. This is supplied to applications via `ConnectivityManager.NetworkCallback` in response to the active `ConnectivityManager#requestNetwork` or passive `ConnectivityManager#registerNetworkCallback` calls. It is used to direct traffic to the given `Network`, either on a `Socket` basis through a targeted `SocketFactory` or process-wide via `ConnectivityManager#bindProcessToNetwork`.

## Summary

### Inherited constants
From interface `android.os.Parcelable`
`int` | `CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int` | `PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

### Fields
`public static final Creator<Network>` | `CREATOR`

### Public methods
`void` | `bindSocket(DatagramSocket socket)` Binds the specified `DatagramSocket` to this `Network`.
`void` | `bindSocket(Socket socket)` Binds the specified `Socket` to this `Network`.
`void` | `bindSocket(FileDescriptor fd)` Binds the specified `FileDescriptor` to this `Network`.
`int` | `describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`static Network` | `fromNetworkHandle(long networkHandle)` Returns a `Network` object given a handle returned from `getNetworkHandle()`.
`InetAddress[]` | `getAllByName(String host)` Operates the same as `InetAddress.getAllByName` except that host resolution is done on this network.
`InetAddress` | `getByName(String host)` Operates the same as `InetAddress.getByName` except that host resolution is done on this network.
`long` | `getNetworkHandle()` Returns a handle representing this `Network`, for use with the NDK API.
`SocketFactory` | `getSocketFactory()` Returns a `SocketFactory` bound to this network.
`int` | `hashCode()` Returns a hash code value for the object.
`URLConnection` | `openConnection(URL url)` Opens the specified `URL` on this `Network`, such that all traffic will be sent on this Network.
`URLConnection` | `openConnection(URL url, Proxy proxy)` Opens the specified `URL` on this `Network`, such that all traffic will be sent on this Network.
`String` | `toString()` Returns a string representation of the object.
`void` | `writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
From interface `android.os.Parcelable`
`abstract int` | `describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void` | `writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

## Fields

### CREATOR

    public static final Creator<Network> CREATOR

## Public methods

### bindSocket

    public void bindSocket (DatagramSocket socket)

Binds the specified `DatagramSocket` to this `Network`. All data traffic on the socket will be sent on this `Network`, irrespective of any process-wide network binding set by `ConnectivityManager#bindProcessToNetwork`. The socket must not be connected.

Parameters
`socket` | `DatagramSocket`

Throws
`IOException` |

### bindSocket

    public void bindSocket (Socket socket)

Binds the specified `Socket` to this `Network`. All data traffic on the socket will be sent on this `Network`, irrespective of any process-wide network binding set by `ConnectivityManager#bindProcessToNetwork`. The socket must not be connected.

Parameters
`socket` | `Socket`

Throws
`IOException` |

### bindSocket

    public void bindSocket (FileDescriptor fd)

Binds the specified `FileDescriptor` to this `Network`. All data traffic on the socket represented by this file descriptor will be sent on this `Network`, irrespective of any process-wide network binding set by `ConnectivityManager#bindProcessToNetwork`. The socket must not be connected.

Parameters
`fd` | `FileDescriptor`

Throws
`IOException` |

### describeContents

    public int describeContents ()

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of `writeToParcel(android.os.Parcel, int)`, the return value of this method must include the `CONTENTS_FILE_DESCRIPTOR` bit.

Returns
`int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or `CONTENTS_FILE_DESCRIPTOR`

### equals

    public boolean equals (Object obj)

Indicates whether some other object is "equal to" this one.

The `equals` method implements an equivalence relation on non-null object references:

- It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`.
- It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`.
- It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`.
- It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified.
- For any non-null reference value `x`, `x.equals(null)` should return `false`.

The `equals` method for class `Object` implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values `x` and `y`, this method returns `true` if and only if `x` and `y` refer to the same object (`x == y` has the value `true`).

Note that it is generally necessary to override the `hashCode` method whenever this method is overridden, so as to maintain the general contract for the `hashCode` method, which states that equal objects must have equal hash codes.

Parameters
`obj` | `Object`: the reference object with which to compare.

Returns
`boolean` | `true` if this object is the same as the obj argument; `false` otherwise.

### fromNetworkHandle

    public static Network fromNetworkHandle (long networkHandle)

Returns a `Network` object given a handle returned from `getNetworkHandle()`.

Parameters
`networkHandle` | `long`: a handle returned from `getNetworkHandle()`.

Returns
`Network` | A `Network` object derived from `networkHandle`.

### getAllByName

    public InetAddress[] getAllByName (String host)

Operates the same as `InetAddress.getAllByName` except that host resolution is done on this network.

Parameters
`host` | `String`: the hostname or literal IP string to be resolved.

Returns
`InetAddress[]` | the array of addresses associated with the specified host.

Throws
`UnknownHostException` | if the address lookup fails.

### getByName

    public InetAddress getByName (String host)

Operates the same as `InetAddress.getByName` except that host resolution is done on this network.

Parameters
`host` | `String`: the hostname to be resolved to an address or `null`.

Returns
`InetAddress` | the `InetAddress` instance representing the host.

Throws
`UnknownHostException` | if the address lookup fails.

### getNetworkHandle

    public long getNetworkHandle ()

Returns a handle representing this `Network`, for use with the NDK API.

Returns
`long` |

### getSocketFactory

    public SocketFactory getSocketFactory ()

Returns a `SocketFactory` bound to this network. Any `Socket` created by this factory will have its traffic sent over this `Network`. Note that if this `Network` ever disconnects, this factory and any `Socket` it produced in the past or future will cease to work.

Returns
`SocketFactory` | a `SocketFactory` which produces `Socket` instances bound to this `Network`.

### hashCode

    public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by `HashMap`.

The general contract of `hashCode` is:

- Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
- If two objects are equal according to the `equals(Object)` method, then calling the `hashCode` method on each of the two objects must produce the same integer result.
- It is not required that if two objects are unequal according to the `equals(java.lang.Object)` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class `Object` does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
`int` | a hash code value for this object.

### openConnection

    public URLConnection openConnection (URL url)

Opens the specified `URL` on this `Network`, such that all traffic will be sent on this Network. The URL protocol must be `HTTP` or `HTTPS`.

Parameters
`url` | `URL`

Returns
`URLConnection` | a `URLConnection` to the resource referred to by this URL.

Throws
`MalformedURLException` | if the URL protocol is not HTTP or HTTPS.
`IOException` | if an error occurs while opening the connection.

See also:

- `URL.openConnection()`

### openConnection

    public URLConnection openConnection (URL url,
                    Proxy proxy)

Opens the specified `URL` on this `Network`, such that all traffic will be sent on this Network. The URL protocol must be `HTTP` or `HTTPS`.

Parameters
`url` | `URL`
`proxy` | `Proxy`: the proxy through which the connection will be established.

Returns
`URLConnection` | a `URLConnection` to the resource referred to by this URL.

Throws
`MalformedURLException` | if the URL protocol is not HTTP or HTTPS.
`IllegalArgumentException` | if the argument proxy is null.
`IOException` | if an error occurs while opening the connection.

See also:

- `URL.openConnection()`

### toString

    public String toString ()

Returns a string representation of the object. In general, the `toString` method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The `toString` method for class `Object` returns a string consisting of the name of the class of which the object is an instance, the at-sign character ``@`', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

>      getClass().getName() + '@' + Integer.toHexString(hashCode())

Returns
`String` | a string representation of the object.

### writeToParcel

    public void writeToParcel (Parcel dest,
                    int flags)

Flatten this object in to a Parcel.

Parameters
`dest` | `Parcel`: The Parcel in which the object should be written.
`flags` | `int`: Additional flags about how the object should be written. May be 0 or `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of `Parcelable.PARCELABLE_WRITE_RETURN_VALUE`, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES

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